package riteh.eventNetwork.client;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URLEncoder;
import java.util.ArrayList;
 
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
 
// Code from: http://lukencode.com/2010/04/27/calling-web-services-in-android-using-httpclient/
public class RestClient
{
    private ArrayList<NameValuePair> params;
    private ArrayList<NameValuePair> headers;
 
    private String url;
 
    private int responseCode;
    private String message;
 
    private String response;
     
    public String getResponse()
    {
        return response;
    }
 
    public String getErrorMessage()
    {
        return message;
    }
 
    public int getResponseCode()
    {
        return responseCode;
    }
 
    public RestClient(String url) {
        this.url = C.SERVER_ADRESS + url + "/" + url;
        params = new ArrayList<NameValuePair>();
        headers = new ArrayList<NameValuePair>();
    }
 
    public void AddParam(String name, String value)
    {
        params.add(new BasicNameValuePair(name, value));
    }
 
    public void AddHeader(String name, String value)
    {
        headers.add(new BasicNameValuePair(name, value));
    }
 
    public void Execute(RequestMethod method) throws Exception
    {
        switch (method)
        {
        case GET:
        {
            // add parameters
            String combinedParams = "";
            if (!params.isEmpty())
            {
                combinedParams += "?";//adding ? to URL
                for (NameValuePair p : params)
                {                                       //adding message={value} to URL
                    String paramString = p.getName() + "=" + URLEncoder.encode(p.getValue(),"UTF-8");
                    if (combinedParams.length() > 1)
                    {
                        combinedParams += "&" + paramString;
                    }
                    else
                    {
                        combinedParams += paramString;
                    }
                }
            }
 
            HttpGet request = new HttpGet(url + combinedParams);//URL?message={value}//0 or 1
 
            // add headers
            for (NameValuePair h : headers)
            {
                request.addHeader(h.getName(), h.getValue());
            }
 
            executeRequest(request, url);
            break;
        }
        case POST:
        {
            HttpPost request = new HttpPost(url);
 
            // add headers
            for (NameValuePair h : headers)
            {
                request.addHeader(h.getName(), h.getValue());
            }
 
            if (!params.isEmpty())
            {
                request.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
            }
 
            executeRequest(request, url);
            break;
        }
        }
    }
 
    private void executeRequest(HttpUriRequest request, String url)
    {
        HttpClient client = new DefaultHttpClient();
 
        HttpResponse httpResponse;
 
        try
        {
            httpResponse = client.execute(request);
            responseCode = httpResponse.getStatusLine().getStatusCode();
            message = httpResponse.getStatusLine().getReasonPhrase();
 
            HttpEntity entity = httpResponse.getEntity();
 
            if (entity != null)
            {
 
                InputStream instream = entity.getContent();
                response = convertStreamToString(instream);
 
                // Closing the input stream will trigger connection release
                instream.close();
            }
 
        }
        catch (ClientProtocolException e)
        {
            client.getConnectionManager().shutdown();
            e.printStackTrace();
        }
        catch (IOException e)
        {
            client.getConnectionManager().shutdown();
            e.printStackTrace();
        }
    }
 
    private static String convertStreamToString(InputStream is)
    {
 
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
 
        String line = null;
        try
        {
            while ((line = reader.readLine()) != null)
            {
                sb.append(line + "\n");
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                is.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
}
